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Resolve conflicting changes in DNS #309 #341 (#346)

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Co-authored-by: yuhan6665 <1588741+yuhan6665@users.noreply.github.com>
This commit is contained in:
Jim Han 2021-03-07 15:12:50 +08:00 • committed by GitHub
parent f50eff5ebb
commit d7cd71b741
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3 changed files with 27 additions and 19 deletions
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28
transport/internet/system_dialer.go
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@ -22,12 +22,12 @@ var (
// InitSystemDialer: It's private method and you are NOT supposed to use this function.
func InitSystemDialer(dc dns.Client, om outbound.Manager) {
effectiveSystemDialer.init(dc, om)
effectiveSystemDialer.Init(dc, om)
}
type SystemDialer interface {
Dial(ctx context.Context, source net.Address, destination net.Destination, sockopt *SocketConfig) (net.Conn, error)
init(dc dns.Client, om outbound.Manager)
Init(dc dns.Client, om outbound.Manager)
}
type DefaultSystemDialer struct {
@ -63,22 +63,30 @@ func (d *DefaultSystemDialer) lookupIP(domain string, strategy DomainStrategy, l
return nil, nil
}
var lookup = d.dns.LookupIP
var option = dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
FakeEnable: false,
}
switch {
case strategy == DomainStrategy_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()):
if lookupIPv4, ok := d.dns.(dns.IPv4Lookup); ok {
lookup = lookupIPv4.LookupIPv4
option = dns.IPOption{
IPv4Enable: true,
IPv6Enable: false,
FakeEnable: false,
}
case strategy == DomainStrategy_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()):
if lookupIPv4, ok := d.dns.(dns.IPv4Lookup); ok {
lookup = lookupIPv4.LookupIPv4
option = dns.IPOption{
IPv4Enable: false,
IPv6Enable: true,
FakeEnable: false,
}
case strategy == DomainStrategy_AS_IS:
return nil, nil
}
return lookup(domain)
return d.dns.LookupIP(domain, option)
}
func (d *DefaultSystemDialer) canLookupIP(ctx context.Context, dst net.Destination, sockopt *SocketConfig) bool {
@ -184,7 +192,7 @@ func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest ne
return dialer.DialContext(ctx, dest.Network.SystemString(), dest.NetAddr())
}
func (d *DefaultSystemDialer) init(dc dns.Client, om outbound.Manager) {
func (d *DefaultSystemDialer) Init(dc dns.Client, om outbound.Manager) {
d.dns = dc
d.obm = om
}
@ -249,7 +257,7 @@ func WithAdapter(dialer SystemDialerAdapter) SystemDialer {
}
}
func (v *SimpleSystemDialer) init(_ dns.Client, _ outbound.Manager) {}
func (v *SimpleSystemDialer) Init(_ dns.Client, _ outbound.Manager) {}
func (v *SimpleSystemDialer) Dial(ctx context.Context, src net.Address, dest net.Destination, sockopt *SocketConfig) (net.Conn, error) {
return v.adapter.Dial(dest.Network.SystemString(), dest.NetAddr())